public class JiSuanQi {
    String color;
    String brand;
    int price;

    public  double jia(double a,double b){
        return (a+b);
    }
    public double jian(double a,double b){
        return (a-b);
    }
    public double chen(double a,double b){
        return (a*b);
    }
    public double chu(double a,double b){
        return (a/b);
    }
    public double lifang(double a){
        return (a*a*a);
    }
}
